Fig. 3: Organization of the monkey cervical spinal cord and soft electrode array tailored to the epidural space of the cervical spinal cord.
a Distribution of the motor nuclei of 8 upper-limb muscles in the monkey cervical spinal cord27 and skeletal positions of these upper-limb muscles. b Layout of a custom electrode array with 5 lateral and 5 medial electrode contacts (design-1) tailored to the monkey cervical spinal cord. c Cross-section diagram of a soft electrode array. d Photograph of a fabricated soft electrode array. Scale bar: 1 cm. e Placement of the electrode array relative to the cervical spinal cord. Lateral electrode contacts were made to face individual dorsal roots while medial contacts were made to be along the midline of the dorsal columns. Pt-PDMS: platinum-polydimethylsiloxane.
